When you use the Salesforce Bulk API to write data to Salesforce targets, make sure that the Java temporary directory on the PowerCenter Integration Service machine has at least 10 MB of available space. The recommended amount of space is 50 MB.
When writing data, the Salesforce Bulk API compresses each batch of data to files in the Java temporary directory, and then sends the compressed batch files to Salesforce for processing. Configure at least 10 to 50 MB of space for the Java temporary directory.
You can find the Java temporary directory in the following locations: